Sewing machine presser foot



March 30, 1943. B. ANTONELLI SEWING MACHINE PRESSER FOOT Filed May a,1941 Attorney iatented Mar. 30, 1943 UNITED STATES ATENT OFFICE SEWINGMACHINE PRESSER FOOT Bruno Antonelli, Fall River, Mass.

Application May 8, 1941, Serial No. 392,539

1 Claim.

My invention relates to improvements in sewing machine presser feet andparticularly to means therein permitting a limited universal movement ofthe foot relative to the shank causing the foot to follow the work moreuniformly and exert a more even pressure thereon, and

the primary object of my invention is to provide a simple and efficientarrangement of this character of relatively simple and inexpensiveconstruction, composed of relatively few parts.

Other important objects and advantages of my invention will be apparentfrom a reading of the following description taken in connection with thedrawing, wherein for purposes of illustration I have shown a preferredembodiment of my invention.

In the drawing:

Figure 1 is a general vertical longitudinal sectional view taken throughFigure 2 along the line l-l and looking upwardly in the direction of thearrow.

Figure 2 is a top plan view of Figure 1.

Figure 3 is a perspective view of the joint element.

Referring in detail to the drawing, the numeral 5 generally designates aconventional form of vertical shank having a generally U-shapedhorizontal cross section as indicated in Figure 2 and terminating at itslower end in a forwardly and slightly downwardly declining elongatedterminal 6 which is generally rectangular in cross section and providedwith a centralized longitudinal bore I rotatably receiving the shaft 8which projects from the head 9 in a rearward and upward direction, thehead 9 forming a shoulder bearing against the forward end of the part 5.A pin l0 traversing the rear end of the shaft 8 holds the describedparts rotatably associated together.

The head 9 is substantially rectangular in top plan and has asubstantially triangular transverse cross section as indicated inFigures 1 and 3, the upper and lower surfaces H and I2, respectively,being convexly rounded.

A hinge pin [3 extends longitudinally through the head 9 at theapproximate longitudinal center thereof and has its ends pivotallyreceived as indicated by the numerals M in Figure 2 of the drawing inthe laterally spaced longitudinal shoulders and I6 which are formed onthe heel portion ll of the foot which is generally designated l8. Thetop of the heel portion l'l between the shoulders l5 and I6 is concavedor hollowed out as indicated by the numeral IS, a portion of theresultant depression acting as a guideway for the rounded under surfacel2 of the head 9 of the shank member, whereby the shank 5 may pivot onthe axis of the pivot pin l3 as well as laterally on the axis of theshaft 8, thereby achieving a limited universal action, the laterallimitation being provided by the inner sides of the shoulders l5 and I6and the rocking on the pin l3 by the engagement of the under surface 12of the head 9 with the depression 19.

As seen in Figure 2 of the drawing, the thread hole 20 is locatedimmediately forwardly of the head 9 and the head 9 has a concavity 2! inits forward edge and upper surface to accommodate the thread. The hole20 is aligned with the usual slot 22 in the foot portion l8.

Although I have shown and described herein a preferred embodiment of myinvention, it is to be definitely understood that I do not desire tolimit the application of the invention thereto except as may be requiredby the scope of the subjoined claim.

Having described the invention, what is claimed as new is:

A sewing machine presser foot structure comprising a foot having a pairof laterally spaced shoulders, a transverse pivot pin extending betweensaid shoulders, a joint element having a head pivoted on said pin, ashaft extending rearwardly from said head longitudinally of the foot,and a shank having a lower terminal positioned between said shouldersand pivoted on said shaft, said joint element and said foot havingconvex and concave faces, respectively, coacting to permit limitedpivotal movement of the foot about the axis of the pin on which the headis pivoted.

BRUNO ANTONELLI.

